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Calendar
System for organizing the days of year / From Wikipedia, the free encyclopedia
A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years.[1][2][3] A date is the designation of a single and specific day within such a system. A calendar is also a physical record (often paper) of such a system. A calendar can also mean a list of planned events, such as a court calendar, or a partly or fully chronological list of documents, such as a calendar of wills.
![]() | The examples and perspective in this article deal primarily with Eurasia and the Near East and do not represent a worldwide view of the subject. (September 2022) |
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Periods in a calendar (such as years and months) are usually, though not necessarily, synchronized with the cycle of the sun or the moon.[4][5][6] The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronized with the solar year over the long term.